Gold has pores, which means it is hollow 3D gold, because 3D gold is made of mold. After processing, there will be small holes, which will overflow the mold material inside, and air will also enter the hollow gold. Generally speaking, the pores in gold are very secret, which can't be seen without careful inspection, but some hollowed-out gold will have obvious and relatively large holes for decoration, which is convenient for gold to be strung together with ropes.

Another possibility is that the process is not fine in the production process.

Have trachoma. It is estimated that there may be two reasons for the small hole. One is that the wall is made too thin during the production process, and then the workers make the flowers too deep for a long time, which may be affected by a little external force or chemicals such as cosmetics, leading to the appearance of this small hole.

There are many small holes in gold jewelry, especially gold bracelets worn by children. The maintenance of gold jewelry is like' a married daughter always goes back to her parents', so it should be maintained frequently. Generally, the jewelry will be taken to a professional gold jewelry store for maintenance and cleaning once every 2-3 months. Wear it at the same time to avoid external friction and contact with shower gel and cosmetics.